<template>
  <div class="goods-relevant">
    <div class="header">
      <i class="icon"></i>
      <span class="title">{{ goodId ? "同类商品推荐" : "猜你喜欢" }}</span>
    </div>
    <!-- 此处使用改造后的xtx-carousel.vue -->
    <XtxCarousel :banners="recommendation" />
  </div>
</template>

<script>
import { getRelevantData } from "../../api/goods";
import { ref } from "vue";

export default {
  name: "GoodsRelevant",
  props: ["goodId"],
  setup(props) {
    let recommendation = fnGetGoodsRelevant(props.goodId);

    return {
      recommendation,
    };
  },
};

// 获取同类推荐数据
function fnGetGoodsRelevant(id) {
  let carousels = ref([]);

  getRelevantData(id).then((res) => {
    // console.log(res.result);
    // 每页有4条数据
    let size = 4;
    // 根据得到的数据计算一共有多少页
    let total = res.result.length / size;
    // console.log(total);
    for (let i = 0; i < total; i++) {
      carousels.value.push(res.result.slice(i * size, i * size + size));
    }
    // console.log(carousels.value);
  });

  return carousels;
}
</script>

<style scoped lang="less">
.goods-relevant {
  background: #fff;
  min-height: 460px;
  margin-top: 20px;

  .header {
    height: 80px;
    line-height: 80px;
    padding: 0 20px;

    .title {
      font-size: 20px;
      padding-left: 10px;
    }

    .icon {
      width: 16px;
      height: 16px;
      display: inline-block;
      border-top: 4px solid @xtxColor;
      border-right: 4px solid @xtxColor;
      box-sizing: border-box;
      position: relative;
      transform: rotate(45deg);

      &::before {
        content: "";
        width: 10px;
        height: 10px;
        position: absolute;
        left: 0;
        top: 2px;
        background: lighten(@xtxColor, 40%);
      }
    }
  }

  :deep(.xtx-carousel) {
    height: 380px;

    .carousel {
      &-indicator {
        bottom: 30px;

        span {
          &.active {
            background: @xtxColor;
          }
        }
      }

      &-btn {
        top: 110px;
        opacity: 1;
        background: rgba(0, 0, 0, 0);
        color: #ddd;

        i {
          font-size: 30px;
        }
      }
    }
  }
}
</style>
